Superplastic Forming of Advanced Metallic Materials

Superplastic Forming of Advanced Metallic Materials

Methods and Applications

1st Edition - June 27, 2011

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  • Editor: G Giuliano
  • Hardcover ISBN: 9781845697532
  • eBook ISBN: 9780857092779

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Description

Ultra fine-grained metals can show exceptional ductility, known as superplasticity, during sheet forming. The higher ductility of superplastic metals makes it possible to form large and complex components in a single operation without joints or rivets. The result is less waste, lower weight and manufacturing costs, high precision and lack of residual stress associated with welding which makes components ideal for aerospace, automotive and other applications. Superplastic forming of advanced metallic materials summarises key recent research on this important process.Part one reviews types of superplastic metals, standards for superplastic forming, processes and equipment. Part two discusses ways of modelling superplastic forming processes whilst the final part of the book considers applications, including superplastic forming of titanium, aluminium and magnesium alloys.With its distinguished editor and international team of contributors, Superplastic forming of advanced metallic materials is a valuable reference for metallurgists and engineers in such sectors as aerospace and automotive engineering.Note: The Publishers wish to point out an error in the authorship of Chapter 3 which was originally listed as: G. Bernhart, Clément Ader Institute, France. The correct authorship is: G Bernhart, P. Lours, T. Cutard, V. Velay, Ecole des Mines Albi, France and F. Nazaret, Aurock, France. The Publishers apologise to the authors for this error.

Key Features

  • Reviews types of superplastic metals and standards for superplastic forming
  • Discusses the modelling of superplastic forming, including mathematical and finite element modelling
  • Examines various applications, including superplastic forming of titanium, aluminiun and magnesium alloys

Readership

metallurgists, engineers in such sectors as aerospace and automotive engineering, students and academics

Table of Contents

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    Preface

    Part I: Superplastic forming methods

    Chapter 1: Metals for superplastic forming

    Abstract:

    1.1 Introduction

    1.2 Historical aspects of superplasticity

    1.3 Types of superplastic materials

    1.4 Grain refinement

    1.5 Processing of commercially significant alloys to develop superplastic microstructures

    1.6 High strain rate superplasticity

    1.7 Grain refinement by severe plastic deformation

    1.8 Mechanisms of superplasticity

    1.9 Sources of further information and advice

    1.10 Acknowledgements

    Chapter 2: Standards for superplastic forming of metals

    Abstract:

    2.1 Introduction

    2.2 Need for standards

    2.3 Existing standards

    2.4 Issues with existing standards

    2.5 Towards improved standards

    Chapter 3: Processes and equipment for superplastic forming of metals

    Abstract:

    3.1 Introduction

    3.2 Superplastic forming processes

    3.3 Forming equipment

    3.4 Forming dies

    Conclusion

    Chapter 4: High-temperature lubricants for superplastic forming of metals

    Abstract:

    4.1 Introduction

    4.2 Lubrication mechanisms

    4.3 SPF lubricants

    4.4 Influence of friction and lubricant on forming

    4.5 Testing and evaluation of lubricants

    4.6 Production issues

    4.7 Conclusions

    Chapter 5: The use of laser surface modification in combined superplastic forming and diffusion bonding of metals

    Abstract:

    5.1 Introduction

    5.2 Effect of laser surface modification on alloy surface

    5.3 Diffusion bonding of laser surface modified alloys

    5.4 Simulation of the bonding process

    5.5 Conclusion

    5.7 Appendix: List of symbols

    Part II: Modelling of superplastic forming

    Chapter 6: Mathematical modelling of superplastic metal sheet forming processes

    Abstract:

    6.1 Introduction

    6.2 Membrane theory

    6.3 Flow rule

    6.4 Analysis of superplastic free forming processes

    6.5 Material constants from bulging tests

    Chapter 7: Finite element modelling of thin metal sheet forming

    Abstract:

    7.1 Introduction

    7.2 Continuum model

    7.3 Finite element formulation and time integration schemes

    7.4 The incremental flow formulation

    7.5 Pressure cycle algorithms

    7.6 Die representation and contact algorithms

    7.7 Commercial codes

    7.8 Applications

    7.9 Future trends and recommendations for further research

    Chapter 8: Constitutive equations for modelling superplastic forming of metals

    Abstract:

    8.1 Introduction

    8.2 Constitutive equations for superplastic alloys

    8.3 Determination of constitutive equations from experimental data

    8.4 Case study: simulation of superplastic forming

    8.5 Conclusions

    Chapter 9: Predicting instability in superplastic forming of metals

    Abstract:

    9.1 Introduction

    9.2 Theoretical considerations

    9.3 Forming analyses and experiments

    9.4 Results and discussion

    9.5 Conclusions and future trends

    Part III: Applications of superplastic forming

    Chapter 10: Superplastic forming and diffusion bonding of titanium alloys

    Abstract:

    10.1 Introduction

    10.2 Titanium alloys

    10.3 The superplastic forming/diffusion bonding process

    10.4 Applications

    10.5 Sources of further information and advice

    10.6 Acknowledgements

    Chapter 11: Superplastic forming of aluminium alloys

    Abstract:

    11.1 Introduction

    11.2 History

    11.3 Superplastic aluminium alloys

    11.4 Cavitation in superplastic aluminium alloys

    11.5 High strain rate superplasticity

    11.6 Exploitation of superplastic aluminium alloys

    Chapter 12: Quick Plastic Forming of aluminium alloys

    Abstract:

    12.1 Introduction

    12.2 QPF process overview

    12.3 Hot forming systems: prior deficiencies and new concepts

    12.4 Integrally heated tool system

    12.5 Tool heating system

    12.6 Temperature distribution in a deck-lid inner panel tool

    12.7 Ancillary benefits of integrally heated tools

    12.9 Material development

    12.10 Lubrication

    12.11 Conclusions

    Chapter 13: Superplastic forming of magnesium alloys

    Abstract:

    13.1 Introduction

    13.2 History

    13.3 Properties of magnesium

    13.4 Superplasticity in magnesium alloys

    13.5 Manufacture of superplastic magnesium alloy sheet

    13.6 Superplastic forming of magnesium components

    Chapter 14: Superplastic micro-tubes fabricated by dieless drawing processes

    Abstract:

    14.1 Introduction

    14.2 Industrial application of micro-tubes

    14.3 Fundamentals of dieless drawing processes

    14.4 Superplastic dieless drawing processes

    14.5 FE simulation of superplastic dieless drawing processes

    14.6 Grain refinement process of metal tubes for superplastic dieless drawing process

    14.7 Other applications

    14.8 Conclusion

    Index

Product details

  • No. of pages: 384
  • Language: English
  • Copyright: © Woodhead Publishing 2011
  • Published: June 27, 2011
  • Imprint: Woodhead Publishing
  • Hardcover ISBN: 9781845697532
  • eBook ISBN: 9780857092779

About the Editor

G Giuliano

Gillo Giuliano works in the Department of Mechanics, Structures and Environment at the University of Cassino, Italy. Professor Giuliano is internationally-known for his work on superplasticity.

Affiliations and Expertise

University of Cassino, Italy

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